static unsigned char grid_png[] = {
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0x49, 0x48, 0x44, 0x52, 0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x10, 
0x08, 0x06, 0x00, 0x00, 0x00, 0x1f, 0xf3, 0xff, 0x61, 0x00, 0x00, 0x00, 
0x04, 0x73, 0x42, 0x49, 0x54, 0x08, 0x08, 0x08, 0x08, 0x7c, 0x08, 0x64, 
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0x63, 0xfc, 0xff, 0xff, 0x3f, 0x03, 0x25, 0x80, 0x09, 0x99, 0xc3, 0xc8, 
0xc8, 0xf8, 0x9b, 0x14, 0x36, 0x86, 0x01, 0x64, 0x01, 0xa8, 0x17, 0x7e, 
0x43, 0xf1, 0x7f, 0x12, 0xd8, 0x6f, 0xfe, 0xff, 0xff, 0x0f, 0x31, 0x00, 
0x86, 0x19, 0x18, 0x18, 0x7e, 0x93, 0xc2, 0xfe, 0xff, 0xff, 0xff, 0xa8, 
0x17, 0x46, 0xbd, 0x40, 0x1b, 0x2f, 0x7c, 0x24, 0x91, 0xcd, 0xc0, 0x48, 
0x69, 0x76, 0x06, 0x00, 0xfa, 0x8b, 0xfb, 0xb9, 0xe9, 0x7c, 0x34, 0x62, 
0x00, 0x00, 0x00, 0x00, 0x49, 0x45, 0x4e, 0x44, 0xae, 0x42, 0x60, 0x82
};
